RADIATOR REPAIR - continued - TM-5-4210-224-14-P0466

TM 5-4210-224-146 P

5-6. RADIATOR REPAIR. (Continued)

c. Special Preparation.

For damaged areas that are between the cooling fins, it may be necessary to remove some of the fins. Do not

remove more fins than necessary. Usually 1/4 inch beyond the leak or damage area is enough to make an

effective repair.

d. Tube Blocking

NOTE

Do not block off more than two tubes in a radiator. Blocking off more than two tubes will reduce

the cooling capability of the system.

If a tube is severely damaged, it can be blocked. The tube should be cut off 1/4 inch (6 mm) fro header and

m the

pinched shut before it is cleaned and sealed.

e. Inlet or Outlet Tank Gasket Leak Repair.

(1) Pry open the clinch tabs except those

under the inlet, outlet, and filler necks

using a screwdriver. Lift the tabs only

enough to allow removal.

NOTE

Care should be taken not to

overbend the tabs. Overbending

could result in breakage. If there

are more than 3 tabs broken on

one side of the header, or more

than 2 adjacent tabs together, the

core must be replaced.

(2) Lift the tank (1) and lide it out from under

the remaining clinched tab(s) (2). You

may-have to tap the tank(s) with your

hand to dislodge the gasket (3). Lift the

remaining tab(s) with pliers.

(4) Clean the header and gasket groove of all

dirt and old rubber.

(3) Remove and discard the gaskets (3).

(5) Clean the sealing edge of the tank(s) (1).

(6) Examine the header gasket surface and

tank flange for evidence of leakage, and

clean the surface to remove dirt, burrs,

and bumps.

5-9